We will meet again

Meeting now suggests we will meet again: Implications for debates on the evolution of cooperation

Humans are often generous, even towards strangers encountered by chance and even in the absence of any explicit information suggesting they will meet again. Because game theoretic analyses typically conclude that a psychology designed for direct reciprocity should defect in such situations, many have concluded that alternative explanations for human generosity--explanations beyond direct recipr...

When Will We Meet Again? Regularities of Social Connectivity As Reflected in Memory and Decision Making

Eels meet again

One of the most mysterious fish of the western Atlantic is the European eel. Its range is vast: adults spend the bulk of their life in freshwater systems from Iceland to Morocco. And, indeed, the species has supported one of the biggest fisheries in Europe, employing up to 25,000 people at its height. But, as with many other commercial species, stocks are now in dangerous decline. The number of...

Invasive Species: Old Foes Meet Again

Tawny crazy ants are spreading across the southern U.S., replacing one of the most notorious invasive pests, the red imported fire ant. A crucial factor in this process is that tawny crazy ants are able to efficiently detoxify fire ant venom.

Will We Connect Again? Machine Learning for Link Prediction in Mobile Social Networks

In this paper we examine link prediction for two types of data sets with mobility data, namely call data records (from the MIT Reality Mining project) and location-based social networking data (from the companies Gowalla and Brightkite). These data sets contain location information, which we incorporate in the features used for prediction. We also examine different strategies for data cleaning,...